Calculate the internal energy of `1 g` of oxygen STP.

Explanation

To calculate the internal energy of 1 g of oxygen at STP, we can follow these steps:

### Step 1: Determine the number of moles of oxygen.
The molar mass of oxygen (O₂) is approximately 32 g/mol.

\[ \text{Number of moles (n)} = \frac{\text{mass}}{\text{molar mass}} = \frac{1 \text{ g}}{32 \text{ g/mol}} = \frac{1}{32} \text{ mol} \]
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